Kalends of January
. AD 820.
Crunnmael son of Odrán, abbot of Cluain Iraird, died.
Coenwulf, king of the Saxons, dies.
Étar was plundered by the heathens, and they carried off a great number of women into captivity.
Cenn Faelad son of Rúman, scribe, bishop, anchorite and abbot of Áth Truim, fell asleep.
Conchobor son of Donnchad made an expedition to Ardachad of Sliab Fuait. Int Airthir was laid waste as far as Emain Macha.